/Engine/Source/Developer/AutomationDriver/Public/IDriverElement.h
Moves focus to the element, then triggers the series of events to invoke keyboard input for pressing the specified character. The character will not be released, nor will their be repeat character events issued for holding the character.
whether the press was successful
[TAsyncResult](API\Runtime\Core\Async\TAsyncResult)< bool > Press ( TCHAR Character )